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353, SHERIDAN, PAPER C-UTTING'MAGHINB- j a 'No. 293,200. 7 f PatentedFeb. 5, 1884.

rr'en STATES ATENT rerun,

nnw n n. snnninnn, or BROOKLYN, new YORK.

PAPER-CUTTING MACHINE.

To all whom it may concern:

Be. it known that I, EDWIN R. SHERIDAN, of- Brooklyn, in the county ofKings and State of New York, have invented certain new and usefulImprovements in Paper-Cutting Machines; and I do hereby declare that thefollowing isa full, clear, and exact description thereof, referencebeing had to the accompanying drawings, making part of this application.

My invention relates to an improvement in that kind of papercuttingmachines in which the clamping bar and cutting-knife pull against eachother in the operations of holding the pile of paper down onto the tableand cutting the pile; or, inother words, to that well-known order ortype of machines in which the power applied to do the work operatesfirst on the clamp to move it toward and forcibly against the pile ofpaper, and then, through the clamps, as a means of resistance, reacts onthe cutting-knife, to force itthrough the pile of paper. A variety ofmachines, differently organized, have heretofore been made and'used inwhich this principle of operation has beencarried into effect-some inwhich one or another arrangement of racks and creeping-pinions has beenemployed as the means throughfwhich to properly transmit the powerapplied to the main shaft, to

the clamp and knife frames, respectively;

others in which one or another system of levers has been employed forthis purpose, and

applying the power of the main driving shaft to the clamp and lever.

My invention has for its object an exceedingly simple organism of thattype in which the clamp-frame and knife are arranged to pull againsteach other through the media of levers and a chain or rope connectingthe moving parts and operated on by an ordinary winch and it consists inthe combination, substantially as hereinafter specifierhwith theclamp-frame, knifeframe, and usual lever for drawing the knife-framedown, of alever pivoted at one end to the main frame of themachine,provided at the other end with a sheave, and adapted to act at anintermediate point on the clamp-frame, a winch mounted on a shaft havingfixed journal-boxes and driven February 5, 1884.

from the main shaft of the machine, and a chain or'rope secured at oneend to said winch, atthe other to the free end of the main orknife-frame lever and passing over the sheave before referred to, allaswill be presently more fully explained.

To enable those skilled in the art to make and use my improved machine,I will now more fully explain its-construction and operation,

referring by letters to the accompanying drawings, forming part of thisspecification, and in which- Figure 1 is an elevation, and Fig. 2askeleton view, showing merely the relative ar -rangement of the winch,sheave, knife-lever, and chain.

NVherever the same parts occur in both views it will be found designatedby the same reference-letter.

A is the main frame-work of the machine;

I), the table, (on which the pile of paper 0 is placed to be cut;) (I,the clamping-bar, which,

together with the lower beam, e, and tie-rods f f, constitute theclamp-frame.

G is the knife-frame, carrying the blade r and having a shearingmovement by reason of being hung to work on pins projecting through itsoblique slots; and H is the main knife-lev-er, pivoted at h, andconnected by apitman, i, to the knifeframe, while its free end or longerarm is worked by the pull-up chain, all

or cable L is made fast at its lower end to one end of the lever H, asshown, andpasses thence upward and partially, around the sheave p,thence downward, and has its other end fastened to the winch 0, (onwhich it is wound in the usual manner.) The sheave p is mounted to turnfreely on the journaldike end of the lever S, which latter, atits otherend, is pivoted to the main frame A.

roo

At or near the middle of the upper edge of the lower'beam, e, of theclamp-frame is arranged, on a transverse horizontal arbor, ananti-friction roller, a, on top of which rests and acts the lower edgeof the lever S, as clearly shown.

The operation of myimproved machine will be understood to be as follows:Power being applied as usual to the main shaft I, the pinion m and geara will cause shaft J to rotate, and thus the winch 0, which is fast onJ, will be made to wind up the chain L. The least resistanceoccurringtf: first at the locality of the sheave p, the latter will beforced downward until the clamp dshall have been caused by the action oflever S on roller 11, to come to a perfect bearing on and presses uponthe pile of paper. Then, as the winding up of the chain continues, thelower end of lever H will be lifted (the sheave 10 now acting merely asa stationaryidl'er for the chain to run over) and the knife-frame G willbe pulled down through the medium of rod 2' by the shorter and descending arm of lever H, the knife being thus caused to pass through thepile of paper. The belt (or clutch, as the case may be) being thenshifted, the motions of the parts are reversed, and they resume theiroriginal positions by gravity about as usual.

It will be seen that by the combination of devices shown a simple andstrong organism is produced, in which the power applied will be usedwith a suitable degree of leverage on both the knife and theclampingbar, that there is a comparatively short length of chain orcable, and comparatively slighter opportunity for any undue spring inthe parts when under strain, even though the latter be made no heavierthan usual.

I am aware that it is not new in a paper-cutting machine to havecombined with the clamp and knife-lever an actuating-chain, a winch, andpulleys, the whole organized so that by the direct action of theactuating-chain the clamp and knife-lever will be drawn toward eachother in the operations of clamping and cutting the pile of paper. Itherefore do not wish to-be understood as broadly claiming such aconstruction of machine; but

WVhat I claim herein asnew, and desire to secure by Letters Patent, is-

In combination with the usual clampingframe, knife-bar, and connectedmain lever for pulling down the latter, an intermediately-arrangedauxiliary lever, S, prox idedwith a sheave, p, and the usual winch, O,and chain L, the latter arranged in the manner specified, and the wholeadapted to operate as and for the purposes hereinbefore explained.

In witness whereof I have hereunto set my hand this 28th day of March,1882.

E. R. SHERIDAN.

In presence of- J. N McINrIRn, W. H. MYER.

